I guess you are not referring to some MS extension but to the editor itself, right? I had an issue around a year ago with cpptools on Linux, where a single 80k

I guess you are not referring to some MS extension but to the editor itself, right? I had an issue around a year ago with cpptools on Linux, where a single 80k LOC header would cause obscene memory usage (10+ G) and the extension would basically stop working.